Table 4-24 Table - ADIC Server User Manual

Table 4-7
Parameter
clientname
drive
status
21 Dec 2001
Parameters for the aci_driveaccess Function Call
client that has allocated the drive or wants to allocate the drive.
Using SHARED_ACCESS as a key word for the client name
when requesting a drive reservation causes that drive to be
shared with other clients. All clients which are configured for
that drive can access it.
one of the device names defined in the DAS configuration file
for the specific client
ACI_DRIVE_UP
ACI_DRIVE_DOWN
ACI_DRIVE_FUP
ACI_DRIVE_FDOWN
ACI_DRIVE_EXUP
ACI_DRIVE_DOWN
The drive can only be put in the DOWN status by
ACI_DRIVE_FDOWN if the drive is occupied.
A drive may only be available to a single client at a time. The
drive status is defined to be either UP (active) or DOWN
(inactive) to requesting clients. When the client sets the status
to ACI_UP, it is exclusively available to that client. If another
client already has the drive status set to ACI_UP, the request
is returned with the d_errno set to EUPELSE. If the client
indicates a status of ACI_DOWN, the drive is unavailable to the
client requesting drive access.
A drive must be empty to modify the drive access parameter
to ACI_DOWN.
Description
normal reservation of the drive (other
clients can change the reservation back
with: ACI_DRIVE_DOWN, if the drive
is empty
deleted reservation normal (only
possible with an empty drive)
force drive allocation (also possible, if
the drive is occupied)
force delete drive allocation (also
possible, if the drive is occupied)
exclusive reservation of a drive, can
only changed from the client self or the
client named
DAS-SUPERVISOR
deleted reservation normal (only
possible with an empty drive)
aci_driveaccess 4-19